How do i get the row count for SharePoint calendar list using JavaScript?

Question

I want to get the row count of a list using JSOM but I am not able to get it.

Can any one help ?

The code am using is as below:

 function retrieveBookingDetails(BDate) {   
     var ctx = new SP.ClientContext(appWebUrl);//Get the SharePoint Context object based upon the URL
        var myList = ctx.get_web().get_lists().getByTitle("MyList");
        var query = new SP.CamlQuery();
        query.set_viewXml('<View><Where><eq><FieldRef Name=\'EventDate\'/><Value Type=\'DateTime\'IncludeTimeValue=\'FALSE\' >' + BDate + '</Value></eq>" + "</Where></View>');
        var items = myList.getItems(query);
        ctx.load(items);
        ctx.executeQueryAsync(onQuerySucceeded, onQueryFailed);
        function onQuerySucceeded() {
            retrieveItems(items);
        }
        function onQueryFailed(sender, args) {
            alert('Request failed. ' + args.get_message() +
                '\n' + args.get_stackTrace());
        }
    function retrieveItems(items) {
        var enumerator = items.getEnumerator();      
        var count = 0;
        var count = items.get_count();           
        while (enumerator.moveNext()) {    
     //am generating HTML here
    }
}

Answer 1

Should you try to use the get_count() function for list items as the following

 var count = 0;
    var count = listItems.get_count();

Also check MSDN to Gets a value that specifies the number of list items in the list as

var value = myList.get_itemCount(); 

[Update]

Should you check a similar scenario at Get Current Event Count